THE ODD JOBS, CONVERTED
UtilitiesFile Converter — MKV to MP4, CSV to JSON, locally
MKV to MP4, documents to PDF, CSV to JSON — the conversions that show up unannounced, handled locally in the tab that is already open.
Runs locally in your browser. Your files never upload.
Conversion requests arrive one file at a time, in formats nobody planned for: the video in the wrong container for the TV, the data in CSV when the tool wants JSON, the document that must become a PDF by end of day. Convert is the drawer where the right adapter always is — one tool for the whole scattered family of format mismatches.
Video containers swap without re-encoding pain: MKV to MP4 and the other common changes, handled by a local media engine that fetches once (~25 MB) and works offline afterwards. Documents become PDFs. CSV becomes JSON. The utilities list covers the rest of the long tail — and everything happens in this tab.
That locality is the feature: the video you were sent privately, the spreadsheet with the real numbers, the document before it was public — none of it uploads to a conversion service. No account, no queue, no file-size ransom note at the download button.
Free, fast, and quietly comprehensive. When the job is audio extraction or image conversion specifically, the dedicated tools next door do it with more options.
What you can do
The parts people actually reach for.
Container changes
MKV to MP4 and the other common video swaps.
Documents to PDF
The everyday document conversion, done locally.
CSV to JSON
Data shaped for the tool that wants it differently.
Local media engine
FFmpeg fetches once (~25 MB), then works offline.
The long tail
A utilities list for the conversions nobody predicts.
No upload, no account
Private files stay private; the service is the browser.
How it works
Three steps, no detours.
Pick the conversion
Video containers, documents, data — the adapter you need is in the drawer.
Add your file
It loads locally; the engine (if needed) is already cached.
Download the result
Converted on your device and handed straight back.
Questions, answered
The ones people ask first.
What can Convert change?
Video containers (MKV to MP4 and friends), documents to PDF, CSV to JSON, and a list of utility conversions — see the tool for the full set.
Does video conversion need the internet?
Only once — the FFmpeg engine (~25 MB) downloads on first use, then stays cached for offline work.
Are my files uploaded?
No. Every conversion happens locally in your browser.
More in Drazil
One workspace, 44 tools — all free, all local.
Runs locally in your browser. Your files never upload. · or browse all 44 tools